Coupling for tubes or pipes.



P atented May 28, |90I.

E. A. BYNE.

GUUPLING EUR TUBES 0R PIPES.

(No Model'.)

UNITED STATES PATENT OFFICE.

EDWARD A. BOYNE, OF BRADFORD, PENNSYLVANIA.

COUPLING FOR TUBES OR PIPES.

SPECIFICATION forming part of Letters Patent No. 675,320, dated May 28,1901.

Application filed J' une 7, 1900.

To a/ZZ whom, it' may concern:

Beit known that I, EDWARD A. BoYNE, a citizen of the United States,residing at Bradford, in the county of McKean and State of Pennsylvania,have invented certain new and useful Improvements in Couplings for Tubesor Pipes; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to couplings for tubes or pipes, but is moreparticularly applicable to the tubes or pipes-of gas and oil wells; andit consists, essentially, of the novel construetion and combination ofthe several parts, as will be hereinafter more fully described, andparticularly stated in the claim.

The prime object of the invention is to provide a coupling by means ofwhich the tube or pipe sections of gas and oil wells will be preventedfrom separating and dropping into the well in case of ire in the well orthe destruction of the derrick by severe windstorms. It is a well-knownfact that the heat generated by a fire in an oil or gas well will causethe coupling or collar no w in use to expand, and thereby allow thelower sections of tubing or pipe to`drop down into the well, frequentlyresulting in the expenditure of much time and money to repair the damagecaused thereby. This same result occurs from the breaking of thesections at the coupling-point, and the breaking is caused by thelateral strain to which the oil tube or pipe is subjected by thewrecking of the derrick in wind-storms.

Another object of the invention is to so construct the coupling that allof its parts will be sufliciently strong to resist anystrain to which itmay be subjected.

Other objects will become apparent upon the further description of theinvention.

The figure illustrated in the accompanying drawing represents alongitudinal sectional view of my improved coupling, showing twosections of the oil tube or pipe coupled together.

In the drawing the numerals l and 2 indi- Serial No. 19,390. (No model.)

cate two sections of an oil-well tube, and 3 the coupler or collar forcoupling the two sections together. The upper end of the lower sectionis formed with an outwardly-extending flange or collar 4, which providesan annular shoulder 5, the object of which will be hereinafterexplained. For a short distance below the flange the section is slightlythickened, as shown at ct, so as to providefor the cutting of thethreads 6 without weakening the section at that point. The lower end ofeach section is screw-threaded, as shown at h. The upper end of thecoupler or collar is internally screw-threaded to receive an externallyand internally screw-threaded reducing-collar 7, into which the lowerend of the upper section is screwed. The lower end of the coupler isformed With an internallyscrew-threaded flange 8, which provides anannular shoulder 9, upon which the shoulder of the flange 5 on thetube-section seats when the coupler or collar is in position.

In making the coupling the section 2 is slipped through the coupler orcollar 4 and screwed into position, with the shoulders 5 and 9contacting. If desired, a gasket 10 of any suitable material may beinterposed between the shoulders to form a more perfectly tight joint,although it will be understood that the coupling without theinterposition of a gasket is -sufficiently tight for all practicalpurposes.

As thus constructed my improved coupling possesses many advantages overthe one now in use, especially in that there is absolutely no chance forthe tube or pipe sections to separate and drop down into the well.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

In a tube or pipe coupling for oil or gas wells, the combination with apipe-section 2 having at its upper end an outwardly-extending flange orcollar et, providing an annular shoulder 5, and having below saidshoulder a thickened portion a, provided with screwthreads, of a coupleror collar 3 having its upper end internally screw-threaded and its lowerend provided with an inwardly-extending screw-threaded ange 8 providingan ani In testimony whereof I afnx my signature nular shoulder 9, saidshoulder being adaptin the presence of two Witnesses. ed to seat andsupport the annular shoulder EDWARD A BOYNE 5 of the section 2, wherebythe section 2 will 5 be prevented slipping from the coupler 3 andWitnesses:

falling into the Well should there be a shrink- A. C. NEWMAN, age of thesection 2, as set forth. J. R. NOTTINGHAM.

